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为研究轧制钨在氦粒子流与高热流协同作用下的表面形貌演化过程,利用德国马普等离子体物理研究所的GLADIS设备对轧制钨板进行了氦源高热流加载实验。结果表明,样品温度对损伤形貌影响显著:低温加载时逐渐发生表面起泡及气泡破裂,且较大尺寸气泡集中分布在近<001>取向区域;高温加载时观察到多孔/珊瑚状结构;中温加载时则呈现出两种损伤形貌的混合。研究认为,表面损伤形貌的形成由表面起泡和珊瑚状结构演化两个过程共同控制。样品温度影响氦在钨中的扩散,从而影响两者的相对强弱,得到不同的损伤形貌。研究发现,辐照剂量的增加也会使得损伤形貌最终向多孔/珊瑚状结构转化。
In order to study the surface morphological evolution of rolled tungsten under the synergistic effect of helium particle flow and high heat flux, a high-temperature helium loading experiment was carried out on the rolled tungsten plate by using GLADIS equipment from Mapu Plasma Physics Institute of Germany. The results show that the sample temperature has a significant effect on the morphology of the damage: surface foaming and bubble rupture gradually occur at low temperature loading, and larger size bubbles are concentrated in the near <001> orientation region; porous / coral-like structure is observed at high temperature loading; When the temperature is loaded, it presents a mixture of two damage morphology. It is believed that the formation of surface damage morphology is controlled by both the process of surface foaming and the evolution of coral structure. The temperature of the sample affects the diffusion of helium in the tungsten, thus affecting the relative strength of the two, resulting in different damage morphologies. The study found that an increase in irradiation dose also led to the final transformation of the damaged morphology into a porous / coral-like structure.